421853743 has 4 divisors (see below), whose sum is σ = 421895128. Its totient is φ = 421812360.

The previous prime is 421853737. The next prime is 421853767. The reversal of 421853743 is 347358124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 421853743 - 2⁵ = 421853711 is a prime.

It is a super-2 number, since 2×421853743² = 355921160966220098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421853843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6580 + ... + 29782.

It is an arithmetic number, because the mean of its divisors is an integer number (105473782).

Almost surely, 2^421853743 is an apocalyptic number.

421853743 is a deficient number, since it is larger than the sum of its proper divisors (41385).

421853743 is a wasteful number, since it uses less digits than its factorization.

421853743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41384.

The product of its digits is 80640, while the sum is 37.

The square root of 421853743 is about 20539.0784359961. The cubic root of 421853743 is about 749.9874030477.

The spelling of 421853743 in words is "four hundred twenty-one million, eight hundred fifty-three thousand, seven hundred forty-three".